rename bittensor/types.py to bittensor/bt_types.py to prevent mixups after pip install

Although it seems common to have types.py (e.g. scalecodec, torch,
substrateinterface) this may lead to issues after applying pip install
-e to a package, as is suggested for bittensor (see git grep 'pip
install -e.* bittensor')

Issues were observed where circular imports would arise as Python's
native typing.py would include bittensor's types.py.

Author: µ

bittensor/types.py renamed to bittensor/bt_types.py

@@ -109,7 +109,7 @@
     unstake_extrinsic,
     unstake_multiple_extrinsic,
 )
-from .types import AxonServeCallParams, PrometheusServeCallParams
+from .bt_types import AxonServeCallParams, PrometheusServeCallParams
 from .utils import (
     U16_NORMALIZED_FLOAT,
     ss58_to_vec_u8,